Broken nutripatrol link through erroneous regex replacement

[k127]

What

HTTP 404 through removed heading slash in Nutripatrol HREF, e.g. https://world.openfoodfacts.org/nutripatrol.openfoodfacts.org/flag/product/?barcode=00000000&source=web&flavor=off.

openfoodfacts-server/lib/ProductOpener/ConfigEnv.pm

Lines 35 to 36 in 8c737c9

	$nutripatrol_url = $ENV{NUTRIPATROL_URL};
	$nutripatrol_url =~ s/\///; # remove trailing slash if there is one

NUTRIPATROL_URL=https://nutripatrol.openfoodfacts.org/
echo $NUTRIPATROL_URL | sed 's/\///'
#  "https:/nutripatrol.openfoodfacts.org/". ⚠️ Note the missing slash

Steps to reproduce the behavior

1. Go to Report a problem section in https://world.openfoodfacts.org/product/00000000/example-product-feel-natural
2. Click on Report this product to our moderators button
3. See HTTP 404

Expected behavior

• HTTP 200
• URL: https://nutripatrol.openfoodfacts.org/flag/product/?barcode=00000000&source=web&flavor=off

Platform (Desktop, Mobile, Hunger Games)

• Platform "world.openfoodfacts.org"